73.2% is the change from 388 to 672
Calculation steps:
[( 672 - 388 ) ÷ 388] x 100 = 73.2%
Formula
Percentage change = [(672 - 388) / 388] x 100
Subtract the new number by the original number
672 - 388 = 284
284 ÷ 388 = 0.7319587628865979
0.7319587628865979 x 100 = 73.2%